Kneeballing is when the knee is used to inflict pain on a manstesticles whether for sexual fun or self defense, derived from tamakeri/ballbusting. Practiced by many as an introduction th ballbusting.
The ability girls and women have developed to hold several items at once in one hand. The skill has been developed due to the lack of pockets in women's clothing.
I thought she'd need multiple trips to carry her phone, keys, wallet, and Starbucks to her car since she needed the other hand to open the door, but she used her impressive girl grip to carry everything in one hand.